Objective: This study aims to extend the Technology–Organization–Environment (TOE) framework by integrating e-commerce adoption quality as a mediating mechanism influencing SME business sustainability in Indonesia. Research Design & Methods: A quantitative approach was employed using survey data from 186 Indonesian SMEs operating in Yogyakarta, West Java, and Jakarta. The data were analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM) to test both direct and mediating relationships among TOE dimensions, e-commerce adoption quality, and business sustainability. Findings: The findings indicate that technological, organizational, and environmental contexts significantly and positively influence e-commerce adoption quality. Moreover, e-commerce adoption quality has a direct positive effect on SME business sustainability and fully mediates the relationship between TOE dimensions and sustainability outcomes. Theoretical/Research Implications: This study refines the TOE framework by repositioning it as a strategic model that links adoption determinants with long-term sustainability outcomes. Practical Implications: Policymakers and SME-support institutions should strengthen internal readiness and external environmental support. Social Implications: High-quality e-commerce adoption contributes to income stability and job creation. Contribution and Value Added: This research advances TOE-based adoption literature by incorporating e-commerce adoption quality and business sustainability.
The selection of an appropriate oil feedstock is a key factor in sustainable biodiesel production. Challenges with the availability and quality of nonedible oil feedstocks have necessitated their combination to derive blends. In this study, manta ray foraging optimization (MRFO) was employed to formulate an optimal oil blend from waste vegetable oil (WVO), castor seed oil (CSO), and neem seed oil (NSO) for biodiesel production. Two tree-based machine learning (ML) models, random forest (RF) and extreme gradient boosting (XGB), were evaluated for their suitability for modeling the oil blend formulation. The potential synergistic benefits of blending the individual oils on biodiesel production were assessed by carrying out a synergistic index analysis, while Shapley additive explanations (SHAP) analysis was used to derive insights into the role and ranking of the importance of each oil in the blend and how they influence some of its key properties. The results showed that the formulated oil blend comprised 55.01 % WVO, 15 % CSO, and 29.99 % NSO, which was obtained by coupling the RF model (R2 = 0.9573) with MRFO. Biodiesel production from this blend using a KOH catalyst was modeled using a validated XGB model (R2 = 0.9977) and then optimized with MRFO to give a yield of 96.4 % at a reaction time of 87.72 min, catalyst dosage of 1.34 wt%, a methanol-oil ratio of 6.36:1, and a temperature of 51.85 degrees C. Synergistic studies indicated a positive synergy for blending. SHAP analysis identified WVO as the most influential factor in the oil blend formulation, while it was the catalyst dosage for biodiesel production. The integration of tree-based models with MRFO facilitated a high biodiesel yield and provided insights into the key input features, offering a more efficient pathway for biodiesel production.
This study aims to analyze the influence of halal awareness, habits, and halal labels on purchasing decisions for Kahf products, with Religiosity as a moderating variable. The sampling technique used was non-probability sampling with purposive sampling. Data were collected through an online Google Form questionnaire distributed to 100 respondents. Data analysis was carried out using Structural Equation Modeling-Partial Least Squares (SEM-PLS) with SmartPLS. The results showed that Halal Awareness has a positive and significant influence on Purchasing Decisions for Kahf products. Habit also has a positive and significant effect on Purchasing Decisions. In addition, the Halal Label has a positive and significant influence on Purchasing Decisions for Kahf products in Sleman Regency. Religiosity serves as a moderating variable, strengthening the influence of Halal Awareness on Purchasing Decisions. However, Religiosity weakens the influence of Habit on Purchasing Decisions. In addition, Religiosity strengthens the Halal Label's influence on Purchasing Decisions for Kahf products. These findings enrich the development of the Theory of Planned Behavior in the context of halal product consumption by showing that Religiosity does not always strengthen the influence of behavioral determinants but, in certain contexts, can weaken the influence of habits. In practice, companies need to develop differentiated marketing strategies based on consumer religiosity, emphasizing halal education in the high-religiosity segment and habit formation in the low-religiosity segment.
The integrity of caprock is a critical factor controlling the long-term safety of Carbon Capture and Storage (CCS) projects. This study presents a comprehensive geomechanical characterization of shale caprock based on laboratory rock mechanics and elastic property measurements from shale core samples of Well SA-001 in the Salaq Basin, Indonesia. Fifteen core plugs from depths between 3546 and 3744 ft MD were subjected to uniaxial and triaxial compressive strength tests, static elastic modulus measurements, and Mohr–Coulomb failure envelope analysis following ASTM D7012 standards. The results indicate ultimate compressive strengths ranging from 10.23 to 112.46 MPa under confining pressures of 0–9.32 MPa. Static Young’s modulus varies between 749 and 12,097 MPa, with Poisson’s ratios of 0.12–0.20. Mohr envelope analysis reveals cohesion values of 2.23–16.56 MPa and internal friction angles between 33.16° and 45.52°. These mechanical and elastic characteristics indicate that the shale interval possesses moderate to high stiffness and shear strength, supporting its effectiveness as a sealing formation for CCS operations. The integration of elastic properties and failure criteria provides a robust basis for assessing caprock integrity under CO₂ injection-induced stress changes.
Purpose – This study aims to examine the influence of Quick Ratio, Return on Equity, Earnings Per Share, and Investment Decisions on firm value. Design/methodology/approach – This research employs quantitative data from a population of 95 companies in the Property & Real Estate sector listed on the Indonesia Stock Exchange (IDX) during the 2021-2024 period. The research sample consists of 28 companies selected using purposive sampling based on predetermined criteria. Multiple regression analysis to test hypotheses was conducted using E-Views 9 software. Findings – The results of the study indicate that the Quick Ratio has a positive effect on firm value, Return on Equity has a negative effect on firm value, Earnings Per Share has a positive effect on firm value, and Investment Decisions have a positive effect on firm value. The study shows an Adjusted R-Square value of 7.6%, indicating that many factors outside the research variables influence firm value. Furthermore, Return on Equity has a negative effect on firm value because the property and real estate sector is characterized by capital-intensive operations and long business cycles. Research limitations/implications – This study is limited to the 2021–2024 observation period and focuses on property and real estate companies listed on the Indonesia Stock Exchange (IDX). Specifically, it examines the Quick Ratio, Return on Equity, Earnings per Share, and Investment Decisions as determinants of Firm Value. The implications of this research suggest that the findings can serve as a reference for management and investors in assessing and anticipating financial risks during the investment decision-making process. JEL : G31, G32, M41
